In this paper, I have studied on the measurement for roundness, parallelism
and surface illuminace according to feed velocity by gun drill under the foundation for the elementary course of theory when it was work brass that was not heat treatment.
1...
In this paper, I have studied on the measurement for roundness, parallelism
and surface illuminace according to feed velocity by gun drill under the foundation for the elementary course of theory when it was work brass that was not heat treatment.
1. The more feed quality was increased the more error value of parallelism
climbed from inlet to outlet.
The reason is result from influence by turning motion.
2. It happened that the roundness hole became a half moon by translation motion when it is slowly moved cutting velocity.
3. the surface illuminance appears very good when it downs the feed velocity slowly, but the cutting efficiency lowers a demerit.